By Barry Stone
Dear Barry,
We just purchased a home in a newly built duplex. Everything is OK except the noise from next door. It seems that the adjoining wall is not well insulated. When we're in the bedroom, we often hear snoring or loud talking from the other unit. Is there something we can do to our bedroom wall (without having to cut it open) to make it soundproof or nearly soundproof? - Rose
Dear Rose,
The builder of your duplex apparently did not provide adequate soundproofing when constructing the party wall between the two units, and the framing method may not have been consistent with sound reduction standards. Rather than wondering what you can do to remedy the situation, the builder should be advised of the situation, since the construction is still under warranty.
If the wall is already insulated, they can add soundboard and a second layer of drywall. This should reduce some of the sound transmission, but the degree of improvement will be uncertain until after the fact.
It would also be advisable to consult with your neighbors. After all, sound transfer works both ways. Perhaps they are hearing conversations and other sounds from your side, as well. If so, they might take an interest in a joint acoustical conquest. If insulation is applied to both sides of the wall, the benefits for both parties could be mutually doubled. It's certainly worth a try.
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